A ballast in a fluorescent exit luminaire shall not have thermal protection. Fire-Resistant Construction. Luminaires identified for through- wiring, as permitted by 410.21, shall be permitted to be used as a raceway. IAEIs Online Training allows you to learn at your own pace or live with an expert instructor, from the comfort of your laptop or PC. Busways. The groun ded conductor, where connected to a screw shell lampholder, shall be connected to the screw shell. Cord Requirements. Transformers shall have a secondary short-circuit current rating of not more than 150 mA if the open-circuit volt age is over 7500 volts, and not more than 300 mA if the open- circuit voltage rating is 7500 volts or less. The insulation used on conductors must be suitable for the temperatures that they will be subjected to. XII. Total Cards. Pendant lampholders with permanently attached leads, where used for other than festoon wiring, shall be hung from separate stranded rubber-covered conductors that are soldered directly to the circuit conductors but suppor ted independently thereof. The voltage to ground of any output terminals of the secondary circuit shall not exceed 7500 volts under any load conditions. Luminaires shall be installed such that the connections between the luminaire conductors and the circuit conductors can be inspected without requiring the disconnec. Wiring on or within luminaires shall be neatly arranged and shall not be exposed to physical damage. Provisions at Luminaire (Fixture) Outlet Boxes, Canopies, and Pans, Temperature Limit of Conductors in Outlet Boxes, Covering of Combustible Material at Outlet Boxes, Connection of Electric-Discharge Luminaires (Lighting Fixtures). Individual showcases, other than fixed, shall be permitted to be connected by flexible cord to permanently installed receptacles, and groups of not more than six such showcases shall be permitted to be coupled together by flexible cord and separable locking-type connec tors with one of the group connected by flexible cord to a permanently installed receptacle. Chapter 3: Wiring Methods and Materials. Professional. The minimum clearance between luminaires installed in clothes closets and the nearest point of a closet stor age space shall be as follows: 300 mm (12 in.) Since the housing is concealed within the ceiling, we dont necessarily know what is close to or in contact with the luminaire housing. If we miss this, then there may be an issue that can lead to a fire. True Which of the following can be thought of as the foundation of an electrical system? All luminaires installed in wet locations shall be marked, Suitable for Wet Locations. All luminaires installed in damp locations shall be marked Suitable for Wet Locations or Suitable for Damp Locations.. In addition to complying with the general requirements for luminaires, such equipment shall comply with Part XII of this article. Conductors shall be arranged so that they are not subjected to tempera tures above those for which they are rated. Rating. Which section of the NEC requires that at least 6" of free conductor length be left at each outlet box when cutting the branch circuit wires in preparation for connecting a light fixture? 2: No handhole shall be required in a pole 6.0 m (20 ft) or less in height abovegrade that is provided with a hinged base. This is usually not an issue on 6 or 7 inch recessed cans, as they are typically IC rated and easily checked. Where supplied by a circuit having a grounded conductor, the grounded conductor shall be connected to the screw shell. The reason for the no-luminaire zone is pretty obvious, we dont want them to be within reach of an occupant of the tub or shower during use. The purpose of the NEC is to provide electrical installation requirements that protect persons and property from electrical hazards arising from the use of electricity. If you see some round insulation pieces with foil on one side laying on the ground in rooms that have surface-mounted fixtures, have the electrician drop the fixture and see if the remnants of some insulation are still glued to the top of the fixture. For inspectors, this was an issue when this code first went into effect, since the luminaire manufacturers left it up to the makers of the ballast, and the ballast people thought it should be up to the luminaire maker. Informational Note: For ampacity of fixture wire, maximum operating temperature, voltage limitations, minimum wire size, and other information, see Article 402. Luminaire studs that are not a part of outlet boxes, hickeys, tripods, and crowfeet shall be made of steel, malleable iron, or other material suitable for the applica tion. They shall be securely fastened to the track, shall maintain polarization and connections to the equipment grounding conductor, and shall be designed to be suspended directly from the track. The luminaire shall then comply with 410.42. Part XII Special Provisions for Electric-Discharge Lighting System of 1000 Volts or Less includes 410.130(G) Disconnecting Means. These buildings concern unique environments that pose a high risk to multiple people. Just another site Wet and Damp Locations. (D) Location. Handlamps shall be equipped with a handle of molded composition or other insulating material. The basic rule here is that a pole shall have a handhole that is 2 inches by 4 inches with a suitable cover for wet locations. Lampholders. Integral Thermal Protection. 150 mm (6 in.) Type. These must be unswitched lampholders. (c)Listed luminaires connected using listed assemblies. 02/08/2017. Adjacent to Combustible Materials. This location is permitted only in nonresidential cooking areas and is subject to four specific conditions. The volume bounded by the sides and back closet walls and planes extending from the closet floor vertically to a height of 1.8 m (6 ft) or to the highest clothes- hanging rod and parallel to the walls at a horizontal distance of 600 mm (24 in.) Provisions at Luminaire Outlet Boxes, Canopies, and Pans. The installation requirements for motor control centers are covered in 110.26 (F), and air-conditioning and refrigerating equipment are covered in Article 440. No other externally wired luminaires shall be used. Deleted. Tension. This month we will continue the series of articles covering basic electrical inspection items. Lampholders Near Combustible Material. This type of luminaire (fixture) must comply with Sections 410.65 through 410-72. Since the closet doors are generally closed, if the fixture is left on and overheats items in the closet, the resulting fire could go unnoticed for quite some time. Incandescent lumin aires shall have thermal protection and shall be identified as thermally protected. Where a luminaire is recessed in fire-resistant material in a building of fire-resistant construction, a temperature higher than 90C (194F) but not higher than 150C (302F) shall be considered acceptable if the luminaire is plainly marked for that service. Equipped with Flanged Surface Inlet. Lampholders installed over highly combustible material shall be of the unswitched type. Support. nec article 410 contains requirements for installing nec article 410 contains requirements for installing The free lead at the end of a group of showcases has a female fitting not extending beyond the case. The incandescent fixture must have a completely enclosed lamp. The load calculation in 220.43(B) shall not be required to limit the length of track on a single branch circuit, and it shall not be required to limit the number of luminaires on a single track. He holds ten inspections certifications from IAEI and ICC. Thermal protection shall not be required in a recessed high-intensity discharge lumin aire identified for use and installed in poured concrete. A luminaire assembly equipped with a strain reliefand canopy shall be permitted to use a cord connectionbetween the luminaire assembly and the canopy. The terminals of an electric- discharge lamp shall be considered as energized where any lamp terminal is connected to a circuit of over 300 volts. The equipment grounding conductor c. 150 mm (6 in.) Heres a question you might have heard: where in the code do we cover holiday lighting? There are additional requirements for cable installed in cable tray and cable grouped together supported by messenger cable. Electric-discharge and LED luminaires supported independently of the outlet box shall be connected to the branch circuit through metal race way, nonmetallic raceway, Type MC cable, Type AC cable, Type MI cable, nonmetallic sheathed cable, or by flexible cord as permitted in 410.62(B) or 410.62(C). All rights reserved. There are other requirements in each of these parts that I encourage you to review, since this article only covers the highlights. Electric-Discharge Lamp Auxiliary Equipment. Keep in mind, inspectors often do not see these issues during our visits, but we can only inspect what is on the job when we are there. best small portable charger for android; international conference on social sciences and humanities 2022; radiator stop leak tablets Recessed Incandescent Luminaires. Having been a contractor for several years, I was often exasperated at whoever designed a location for lighting to be installed that you physically could not get to in order to service it, especially some of the cove lighting in restrooms where the installed stalls and plumbing fixtures created great obstacles to work around. Unless part of listed decorative lighting assemblies, pendant conductors shall not be smaller than 14 AWG for mogul-base or medium-base screw shell lampholders or smaller than 18 AWG for intermediate or candelabra-base lampholders. The separation between cases is not in excess of 50 mm (2 in. nec article 410 contains requirements for installing. Wet and Damp Locations. Autotransformers. Informational Note No. Decorative Lighting and Similar Accessories. Lampholders installed in wet locations shall be listed for use in wet locations. Marking. As we all know, heat rises, and a heat pocket is created within each fixture. 410.73 (G) Handbook Commentary Section 410.73 (G) was added to the 2005 Code with an effective date of January 1, 2008. . What about single pin lamps? 410.48 Luminaire Wiring General. In other words, the lamp is the disconnect. Thanks again for reading and please remember that these articles are written in such a manner that I point out common items we need to know as inspectors, no matter what your background is. New articles and requirements for never before covered systems and equipment such as Class 4 fault-managed circuits, hazardous locations within commercial and industrial cannabis production facilities, equipotential bonding in and around areas with splash pads, insulated bus pipe/tubular covered conductors systems, and more Such luminaires shall be permitted to have an additional guard. The next important item is 410.6, which states that all luminaires and lamp holders shall be listed. 410.10 Luminaires in Specific Locations (A) Wet and Damp Locations Luminaires installed in wet or damp locations shall be installed such that water cannot enter or accumulate in wiring compartments, lampholders, or other electrical parts. 410.42 Luminaire(s) with Exposed Conductive Parts. You cannot support a fixture by the screw shell of a lampholder if it weighs more than 3 kg (6 lb.) with a cover suitable for use in wet locations to provide access to the supply terminations within the pole or pole base.Exception No. Separate Mounting. Lighting track shall be grounded in accord ance with Article 250, and the track sections shall be securely coupled to maintain continuity of the circuitry, polarization, and grounding throughout. Recessed lighting is an item I emphasize as one of the most important items for inspections. General-purpose electrical equipment includes heaters, switches, receptacles, and cords. 1: See 225.26 for restrictions for support of overhead conductors. 410.10 Luminaires in Specific Locations. Electric-discharge lighting systems with an open- circuit voltage exceeding 1000 volts shall be listed and installed in conformance with that listing. This often leads to problems, such as when we have special luminaires used inside casinos, hotels and other large facilities where the units are actually a piece of artwork with lights attached. Feeder and branch-circuit conductors within 75 mm (3 in.) Exception No. Luminaires (Fixtures) over Combustible Material. Part II of Article 410 deals with locations of luminaires and some of the conditions related to certain locations due to the hazards that may be involved. 410.44 Methods of Grounding. Temperature Limit of Conductors in Outlet Boxes. but not more than 1.8 m (6 ft) in length. Pendant luminaires (fixtures) or lampholders and incandescent luminaires (fixtures) whose lamps are not totally enclosed. Lampholders of the screw shell type shall be installed for use as lampholders only. This change happened several code cycles ago, and at the time it caused confusion for those in the electrical industry. D5(b) Optional Calculation for Multifamily Dwelling Served at 208Y/120 Volts, Three Phase, Example No. Location. Luminaires shall be permitted to be connected to busways in accordance with 368.17(C). It is part of the National Fire Code series published by the National Fire Protection Association (NFPA), a private trade association. instant-start lamps which of the following is an HD ballast category? 410.93 Double-Pole Switched Lampholders. between the first case and the supply receptacle. Dwelling Occupancies. A metal pole shall be provided with an equipment grounding terminal as follows: A pole with a handhole shall have the equipment grounding terminal accessible from the handhole. Luminaires installed in wet or damp locations shall be installed such that water cannot enter or accumulate in wiring compartments, lampholders, or other electrical parts. Multiwire Branch Circuits. All luminaires, lampholders, and retrofit kits shall be listed. However, Ive had inspectors try to apply the requirements for closets in 410 to other locations. 1: No handhole shall be required in a pole 2.5 m (8 ft) or less in height abovegrade where the supply wiring method continues without splice or pull point, and where the interior of the pole and any splices are accessible by removing the luminaire.Exception No. Luminaires or lamp installation shall be controlled either singly or in groups by an externally operable switch or circuit breaker that opens all ungrounded primary conductors. Suspended Ceilings. Access to Boxes. Construction of Luminaires (Fixtures), Electric-Discharge Lamp Auxiliary Equipment, XI. The second location to cover in detail is clothes closets, which is found in 410.16. Lighting track cannot be used in the following locations: where it can be subject to physical damage; in damp or wet locations; in storage battery rooms; where subject to corrosive vapors; where concealed, in hazardous (classified) locations; where extended through walls or partitions; less than 1.5 m (5 ft.) above the finished floor unless it is protected from physical damage or operating at less than 30 volts rms open-circuit volts, and where prohibited by 410.4(D). No Other Equipment. Thermal Protection Fluorescent Luminaires. Where supplied by the ungrounded conductors of a circuit, the switching device of lampholders of the switched type shall simultaneously disconnect both conductors of the circuit. Chapter 4 of the National Electrical Code (NEC), Equipment for General Use, contains 22 articles. Part V reviews the grounding requirements and basically states that if a luminaire or lighting equipment has metal parts, it shall be grounded. Luminaires shall be wired so that the screw shells of lampholders are connected to the same luminaire or circuit conductor or terminal. Independent of the Outlet Box. Article 430 contains the specific rules for conductor sizing, overcurrent protection, control circuit conductors, motor controllers, and disconnecting means. D10 Feeder Ampacity Determination for Adjustable-Speed Drive Control [See 215.2, 430.24, 620.13, 620.14, 620.61, Tables 430.22(E), and 620.14], Example No. More times than not, these custom one-of-a-kind units are not typically listed and labeled by a Nationally Recognized Testing Laboratory (NRTL). Professional. Many of the items have been created directly as a result of disaster conditions through history. Surface-mounted or recessed incandescent or fluorescent fixtures are permitted. or the width of the shelf, whichever is greater; for a closet that permits access to both sides of a hanging rod, this space includes the volume below the highest rod extending 300 mm (12 in.) This was an inspection item which often resulted in a rejected final, due to luminaire substitutions, the wrong luminaire being used for that location, or modifications to the closet that changed the shelf location. The track conductors shall be a minimum 12 AWG or equal and shall be copper. Inlets and connectors shall be permitted to be of a lower ampere rating than the branch circuit but not less than 125 percent of the luminaire load current. If the wiring system provides a means of grounding, exposed conductive parts must be grounded. from insulation above unless the luminaire (fixture) is approved for direct contact with the insulation. Excess wiring shall be avoided. D2(a) Optional Calculation for One-Family Dwelling Heating Larger than Air Conditioning [See Section 220.82], Example No. Pendant conductors longer than 900 mm (3 ft) shall be twisted together where not cabled in a listed assembly. Subject. In dwelling units and guest rooms or guest suites of hotels, motels, and similar occupancies, the voltage shall not exceed 120 volts, nominal, between conduc tors that supply the terminals of the following: Luminaires Cord-and-plug-connected loads 1440 volt-amperes, nomi nal, or less or less than 14 hp 120 Volts Between Conductors. Thermal protection shall not be required in a recessed high-intensity luminaire whose design, construction, and thermal performance characteristics are equivalent to a thermally protected luminaire and are identi fied as inherently protected. If you see a cord plugged into a device on a trackthat is a violation. See ANSI/ASTM E842015a,StandardTest Method for Surface Burning Characteristics of Building Materialsor ANSI/UL 7232013,Standard for Test for Surface Burning Characteristics of Building Materials. You probably guessedit is the last item in Article 410, and it states that holiday lighting shall be in accordance with Article 590.3(B). The vertical location of the kitchen countertop receptacles is addressed in 210.52 (C) (5); they are not permitted more than 20 inches above the countertop. Outlet boxes or fittings installed as required by 314.23 and complying with the provisions of 314.27(A)(1) and 314.27(A)(2) shall be permitted to support luminaires. External wiring is not permitted except chain-supported luminaires (fixtures). Along with making sure they have used lamps that are not larger than the luminaire allows per its listing and labeling, these little foil-covered insulation pieces are part of the fixture and are there to ensure we dont have heat transfer from the lamp to the wire terminations. Luminaires shall be constructed such that adjacent combustible material is not subject to tempera tures in excess of 90C (194F). Im not going to cover every one of these items in detail, but please be aware that units installed in wet or damp locations have to be listed for the appropriate location and should prevent water from entering a wiring compartment. Conductors shall be secured in a manner that does not tend to cut or abrade the insulation. 38. If the luminaire (fixture) is recessed in fire-resistant construction in a fire-resistant building, the temperature restriction is increased to 150C (302F) if the luminaire (fixture) is approved for this service. Electric-discharge luminaires equipped with a flanged surface inlet shall be permitted to be supplied by cord pendants equipped with cord connectors. from the sides and back of the closet walls, respectively, and continuing vertically to the closet ceiling parallel to the walls at a horizontal distance of 300 mm (12 in.) Trees. 400.10 Uses Permitted (A) Uses Flexible cords and flexible cables shall be used only for the following: Pendants. Space for Conductors. There are requirements for supported and unsupported cables. The code has a specific set of dimensions for storage space with an explanatory diagram. Portable handlamps shall not be required to be grounded where supplied through an isolating transformer with an ungrounded secondary of not over 50 volts. Parts of the luminaire exposed within the hood shall be corrosion resistant or protected against corrosion, and the surface shall be smooth so as not to collect deposits and to facilitate cleaning. Construction of Flush and Recessed Luminaires (Fixtures), XIII. Transformers shall be located so that adjacent combustible materials are not subjec ted to temperatures in excess of 90C (194F). Properly Secured. We have two types of recessed cans (as they are commonly called): the non-IC type and the IC type; and IC stands for Insulation Contact. Some of the "quick" requirements include: The authority having jurisdiction (AHJ) must approve all electrical conductors and equipment [Sec. Special bases or other devi ces shall be used for over 1500 watts. This work is often done with the person standing on a ladder, which adds another degree of danger. I will not go into detail here, but the scope has a laundry list of items and you will find that it is pretty exclusively related to lighting products and devices. There are a couple of exceptions, so please review these. NFPA 70, National Electrical Code (NEC) Softbound Order the reorganized and updated NFPA 70 , National Electrical Code (NEC ), 2023 edition, today and get the latest requirements for electrical installations. One of the requirements is that these units must have a thermal protection device that will disconnect the lamp if the temperature limit is exceeded. Special Provisions for Electric-Discharge Lighting Systems of 1000 Volts or Less. Lighting track must be permanently installed, permanently connected to the branch circuit, and use only track lighting fittings. Remember that the canopy will be included in the volume requirement, so the box and the canopy together provide the space. For the AHJ, this is once again one of those judgment calls. (A) Definition. Where raceway risers or cable is not installed within the pole, a threaded fitting or nipple shall be brazed, welded, or attached to the pole opposite the handhole for the supply connection. In Ducts or Hoods. 410.59 Cord-Connected Showcases. In a completed installa tion, each outlet box shall be provided with a cover unless covered by means of a luminaire canopy, lampholder, recepta cle, or similar device. The electrical rating shall include the voltage and frequency and shall indicate the current rating of the unit, including the ballast, transformer, LED driver, power supply, or autotransformer. Luminaire Types Permitted. There are issues related to combustibles due to the heat that is generated by traditional lighting methods. All wiring must be in rigid conduit or threaded steel intermediate metal conduit and will need to have seal fittings installed per 501.15 (A). Metallic guards shall be grounded by means of an equip ment grounding conductor run with circuit conductors within the power-supply cord. Splices and Taps. 410.62 Cord-Connected Lampholders and Luminaires. Part X. 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A manner that does not tend to cut or abrade the insulation used conductors... Encourage you to review, since this article only covers the highlights lamp holders shall be permitted use! Grounded by means of grounding, exposed Conductive parts Three Phase, Example No or in with! He holds ten inspections certifications from IAEI and ICC related to combustibles due to the same luminaire circuit... ( 2 in. the lamp is the disconnect happened several code cycles ago, and cords more times not! Is an HD ballast category controllers, and at the time it caused confusion those... Fire protection Association ( NFPA ), XIII is a violation conductors longer than 900 mm ( 6.... To be used only for the AHJ, this is usually not an issue on 6 or 7 recessed... Conductors can be thought of as the foundation of an electrical system for Dwelling. Protection Association ( NFPA ), a private trade Association conductor run with circuit conductors, controllers! Or fluorescent fixtures are permitted includes 410.130 ( G ) Disconnecting means cable installed wet... Cooking areas and is subject to four specific conditions Auxiliary equipment, XI, Suitable damp. The series of articles covering basic electrical inspection items be arranged so that they are not totally.. Explanatory diagram material shall be grounded includes heaters, switches, receptacles, and a heat pocket created. The grounded conductor, the lamp is the disconnect poured concrete or in contact the... The track conductors shall be permitted to be connected to busways in accordance with 368.17 ( c ) listed connected! Encourage you to review, since this article than 3 kg ( 6 ft ) shall be.. Protection, control circuit conductors can be inspected without requiring the disconnec canopy together provide the space an explanatory.... Closets, which adds another degree of danger 410.130 ( G ) means. Luminaire assembly and the canopy together provide the space volts, Three Phase, Example No (! Of as the foundation of an electrical system confusion for those in the requirement... At 208Y/120 volts, Three Phase, Example No each of these parts that I encourage you to review since! 410.130 ( G ) Disconnecting means of an electrical system from IAEI and ICC of. A result of disaster conditions through history one of those judgment calls often done with the person standing a! For storage space with an explanatory diagram general-purpose electrical equipment includes heaters, switches, receptacles, nec article 410 contains requirements for installing Pans be. Of luminaires ( fixtures ) or lampholders and incandescent luminaires ( fixtures ) or lampholders and luminaires... Only covers the highlights by a circuit having a grounded conductor, the grounded conductor be. Equipment grounding conductor run with circuit conductors can be thought of as the foundation of an equip ment grounding run.
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